No, but playing in more CL finals definitely is(mostly). You only have to look it up
Where do you look up for luck? You treat it as fact with absolutely no proof at all.
It's not just CL finals, Ronaldo played in 6 CL finals. Messi played in 3. Ronaldo has played in CL semis 11 times, Messi just 7.
You will throw the excuses you want, it's luck, it's the refs, it's a freaking volcano in Italy then you'll ignore everything that went against Ronaldo and favoured Messi but how many times will this have to happen before the excuses stop? Wether it's in Madrid or in Paris next year Ronaldo will be playing the CL final again and you'll be here arguing it's luck again. How many times in a row will it take?
Maybe Ronaldo's teams get further because he actually does play better in those games given he scores more and he assists more.
CL quarters: 20 games for Ronaldo, 23 goals. 20 games for Messi, 10 goals.
CL semis: 20 games for Ronaldo, 13 goals. 13 games for Messi, 4 goals.
Those aren't meaningless goals either nor are the Messi games great performances where he just didn't score... in a year people will be arguing exactly that about yesterday's game too but it is true that he's regularly underperformed. Ronaldo hasn't. So, why does Ronaldo get so damn lucky all the time?